熱風沖天爐是我公司在總結以往密筋爐膽沖天爐優缺點的基礎上，經過對各個技術參數重新優化設計，并充分總結了在用戶中的使用情況而成的。密筋式換熱器采用優質容器鍋爐鋼板，主體埋弧焊焊接，焊縫按容器標準超聲波探傷；散熱片采用CO2氣體保護焊雙面連續焊焊接，布局合理，保證氣體充分紊流換熱。
      熱風沖天爐分為單換熱器和雙換熱器兩種。爐缸形式分為固定式和移動式兩種,具有合理的結構。采用自身熱交換方式供風，可獲得200－350℃的高溫熱風，在層焦比1：8－1：10的情況下。鐵水溫度可達到1450－1520℃，換熱器下部法蘭采用翻邊沖壓法蘭。加料口和換熱器之間采用活動連接，可以有效的避免因熱脹冷縮而拉裂換熱器，增加換熱器的使用壽命。
     熱風沖天爐技術特點是：
1）采取雙重措施來解決爐膽的熱膨脹問題，使其壽命比傳統的密筋爐膽壽命長2～3倍；
2）優化了爐膽結構，降低了阻力系數，減少了供風阻力；
3）爐體上段采用雙筒滑動式結構，爐體受熱膨脹后，可在此自由伸縮，解決因爐體膨脹導致爐底板變形等問題；
4）熱風溫度大于200℃，在降低能耗、提高鐵水質量等方面具有明顯效果，同時能夠解決風口掛渣問題，降低操作者的勞動強度。
     熱風沖天爐技術參數： 
1）熱風溫度：150-250℃
2）一般層焦比：1：8-10　
3）鐵水溫度：1450—1500℃
4）生產率1-30t/h

Hot Air Cupola
Hot Air Cupola is designed on the base of dense tendons furnace tube cupola , which has a optimal design of all the data. Dense tendons furnace internal adopts top quality boiler plate, submerged arc welding, and ultrasonic flaw detection. The cooling fin adopts CO2 protecting double-surface continuous welding. Its reasonable layout ensures enough heat exchange of the air.

Hot Air Cupola has 2 kinds’ heat exchangers. Fixed type and movable type are the form of hearth.
It use itself heat exchanging to supply air, which can get 200 －350℃ hot air, when the layer ratio reach 1：8－1：10. The temperature of the hot iron can reach 1450－1520℃. The flange under the heat exchanger adopts stamp flange. The connection between the charging gate and the heat exchanger is flexible one, which effectively avoid the break of the heat exchanger when thermal expansion and contraction, reaching a long life usage.
 
Hot Air Cupola Characteristics:

1) Two kinds of method to solve thermal expansion problem and the life now are 2 to 3 times longer than traditional furnace.
2) optimal design of the structure on the cupola; reduces the drag coefficient, reducing the supply air resistance
3) The up section of the furnace adopts double tube sliding type, which can expand freely when the furnace meets thermal expansion. It can avoid bottom plate deformation.
4) The temperature of the hot air can be greater than 200℃, which can reduce energy consumption and improve the quality of hot metal .

Technical Data of Hot Air Cupola :

1) Hot air temperature         150-250℃
2) General layer of coke rate     1：8-10
3) Hot metal temperature        1450—1500℃
4) Productivity                1-30t/h